Howlite and Celestine Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.45-2.58
3.90-4.00
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
None
Perfect on {001}, good on {210}, poor on {010}
Mohs Hardness
3-3.5
3-3.5
Chemical Composition
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Howlite and Celestine Chemical Formula
While comparing Howlite and Celestine physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Howlite and Celestine chemical formula.
- Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Celestine- SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Howlite and Celestine Specific Gravity
Another important criteria for qualitative analysis of gemstones is Howlite and Celestine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Howlite and Celestine Optical Properties during the identification of gemstone. Specific gravity of Howlite is 3.90-4.00 whereas that of Celestine is 3.90-4.00.